Sometimes one of the women who live next door to me will cough or something, and I'll be reminded of how thin the walls between our two apartments are. Such reminders are especially disconcerting when I have been singing "David Duchovny, why won't you love me? David Duchovny! WHY WON'T YOU LOVE ME!" (here) in my maximum-decibel falsetto less than a half hour before.
Of course, before I realized how thin the walls were, I tested the echo acoustic of the empty apartment prior to my furniture being moved in by using this same falsetto to sing the "You might just make it after all" line from the Mary Tyler Moore theme over and over again.